ppi in teradata

: Short int * * PPI;//This is a pointer to the pointer, note that there are two * ppi=π The first sentence: the short int * * ppi;--declares a pointer variable PPI, which is used to store (or point to) the address of a short int * Type pointer variable. The second sentence: pi that is to take PI address,

All along, I on the mobile resolution, pixels, such as the concept of silly, special look at a number of cattle people blog after the summary of the following points for future review. Document Source Http://weizhifeng.net/you-should-know-about-dpi.htmlHttp://www.chinaz.com/manage/2015/0902/441624.shtmlHttp://www.cnblogs.com/2050/p/3877280.htmlHttp://www.uisdc.com/mobile-ui-measurement-guidelineHttp://www.25xt.com/appdesign/8336.htmlhttp://www.zhangxinxu.com/wordpress/2012/08/window-devicepix

/** * Crazyandcoder * Contact: * QQ : 275137657 * Email: [Email protected] * Reprint please indicate the source! */ Android Screen resolution summaryContact Androidui Design always encounter some concepts such as: dpi, PPI, SP, DP, etc., what do these mean? And what do we need to be aware of when we use these? Next we will make a summary, convenient for later use.First, the basic concept Px pixel pixels,

, which is the memory start address of the I variable. So, when we read and write to the *PI, it is actually the read and write operation of the I variable. Such as:*pi=5; /* is equivalent to i = 5; */You can go back to chapter II of the book, where there are more detailed explanations.Second, the address of the pointer and pointer to another pointer addressIn the previous section, we saw that the pointer variable itself is in the same memory address as other variables, such as PI's memory start

, the memory image of the variable is as follows:Memory Address → 6 7 8 9 10 11 12 13 14 15Bytes --------------------------------------------------------------------------------------... | 50 | 6 |Bytes --------------------------------------------------------------------------------------| Short int I | char a | short int * PI |No: the PI value of the Short integer pointer variable is 6, which is the memory start address of the I variable. Therefore, when we perform read/write operations on * Pi

I. Several Concepts about resolution To accurately grasp and understand the meaning of resolution, it is necessary to clarify the following concepts.Resolution: Includes device resolution, screen resolution, graphic resolution, scan resolution, and bit resolution.Device resolution: the number of points that can be generated on each inch of an output device, such as display, inkjet printer, laser printer, hot wax printer, and plotter. This resolution is measured by the unit of DPI. Generally, the

Today this Tencent game seven treasure classmate of dry goods, not only to the students of absolute/relative length units, screen size/resolution/pixel density, ppi/dpi/sp/px, and a series of basic terminology, but also the most important to move the page to reconstruct the knowledge point viewport in-depth explanation, the whole professional dry goods, Designer, Collect! Just start to contact mobile page refactoring, is not very confused should be a

Document directory (1) CSS pixels and device pixels (2) PPI/DPI (3) density determines the proportion (4) use of viewport (1) Simple and rude (2) perfection (3) reasonable compromise (1) weinre Remote Real-time debugging (2) AVD simulator debugging (3) Mobile Phone packet capture and host Configuration There are more and more mobile devices, and more than 1.3 million android mobile phones are activated every day. Therefore, our webapps f

Mobile device users more and more, the daily activation of Android phone has more than 1.3 million units, so we face the mobile Terminal WebApp also began to follow. This paper mainly introduces the relevant knowledge and experience of webapp development and debugging, and gives several optional solutions.I. Basic concepts (1) CSS pixels and device pixelsCSS Pixels: The abstract unit used by the browser, used primarily to draw content on a Web page.Device pixels: Displays the smallest physical u

Resolution is an important concept related to images. It is a technical parameter for measuring the expressiveness of image details. However, there are many types of resolutions with different meanings. Correct understanding of the specific meaning of resolution in various situations, and clarifying the relationship between different representation methods is a crucial step. The following describes several common image input/output resolutions and different image input/output device resolutions

Mobile-WebApp development knowledge requiredMobile device users more and more, the daily activation of Android phone has more than 1.3 million units, so we face the mobile Terminal WebApp also began to follow. This paper mainly introduces the relevant knowledge and experience of webapp development and debugging, and gives several optional solutions.First, the basic concept(1) CSS pixels and device pixelsCSS Pixels: The abstract unit used by the browser, used primarily to draw content on a Web pa

This paper mainly introduces the relevant knowledge and experience of webapp development and debugging, and gives several optional solutions.First, the basic concept(1) CSS pixels and device pixelsCSS Pixels: The abstract unit used by the browser, used primarily to draw content on a Web page.Device pixels: Displays the smallest physical unit of the screen, with each DP containing its own color and brightness.The equivalent CSS pixels on the phone screen, which is not fixed, depending on a lot of